Dynamic Random-Access Memory (DRAM) is a type of computer memory that stores data in a dynamic way, meaning it needs to be refreshed thousands of times per second to maintain the information. Each memory cell in DRAM consists of a capacitor and a transistor, which together hold a bit of data. This design allows for high-density storage, making DRAM a popular choice for main memory in computers and other devices. DRAM is faster than traditional storage options like hard drives but slower than Static Random-Access Memory (SRAM). It is commonly used in personal computers, servers, and mobile devices due to its balance of speed, cost, and capacity.